Machine for use in the manufacture of shoes



Oct, 22, 1940. I J. B. HADAWAY MACHINE FOR USE IN THE MANUFACTURE OFSHOES Filed July 50, 1937 3 Sheets-Sheet l Oct. 22, 1940. J. B. HADAWAYMACHINE FOR USE IN THE MQNUFACTURE 0F SHOES Filed July 30, 1937 3Sheets-Sheet 2 A/VENTU/P' Oct. 22, 1940. HA A 2,218,576

MACHINE FOR USE IN THE MANUFACTURE OF SHOES Filed July 50, 1937 3Sheets-Sheet 3 WVEA/TUF /5 hm 2x27" Patented Oct. 22, 1940 PATENT OFFICE"MACHINE FOR use IN THE MANUFACTURE oF SHOES j John B. Hadaway,.Swampsoott, Mass, assignor to United Shoe Machinery Corporation,Borough of Flemington, N J a corporation of New Jersey Application July30,1937, Serial No. 156,560

16 Claims. (01. 12-17) This invention relates to machines for use in themanufacture of shoes and is herein illustrated and described as embodiedin a machine forrubbing the stitches of an outsol'e and for roughing thechannel surfaces preparatory to applying cement to the channel tofacilitate adhesion of cement when .the channel lip is laid. Theillustrated'machine represents an improvement upon the machine disclosedin United States LettersPatent No. 1,217,595, granted February 2'7, 1917upon my application and it includes features disclosed and claimedinUnited States Letters Patent No. 2,004,109, granted June 11, 1935 uponmy application, United States Letters Patent No. 2,087,238, granted July20, 1937 upon application of Charles G. Brostrom, and an application forUnited States Letters Patent-Serial No. 125,608, filed February 13, 1937in the name of Arthur S. Johnson.

It is an object of the present invention to provide improvedinstrumentalities I for roughing channels and for rubbing stitches andalso to provide an improved machine equipped with such instrumentalitiesand organized to enable them to perform their respective functionssimultaneously. In accordance with a feature of the invention, theillustrated machine is'provided with a pair of roughing toolsconstructed and arranged to operate, respectively, upon a channel baseand a channel lip, and a stitch-rubbing tool positioned between theroughing tools. As illustrated, the roughing tools consist of rotarybrushes and the stitch-rubbing instrumentalities are toothed membersoscillated in such a manner as to bring them into rubbing engagementwith the stitches. These stitch-rubbing members are oscillated inorbital paths which are elongated in the direction of feed of the work.The stitch-rubbing members engage the stitching alternately, Zone ofthem always being in engagement with v the stitching.

In accordance with a further feature, each of the above-mentionedroughing tools, as herein illustrated, consists of an improved roughingbrush comprising a plurality of sectors each having an abrasiveperiphery, a disk having a. plurality of radial guideways in which thesectors are mounted, and a rotary cam mechanism "for adjusting thesectors inwardly and outwardly of the guideways. These'brushes in theillustrated machine are frusto-conical in form, having their end facesof larger diameter adjacentto each other, the end face of the'brushwhich operates on the channel basebeing greater in ,diameter than theend face of the brush which operates on the channel lip. Thisconstruction avoidsthe possibility of scouring through the lip.

These .and otherfeatures of the invention, in cluding certain details ofconstruction and combinations of parts, will be described in .connectionwith the illustrated machine and pointed out ,I in the appended claims.

, ;Referring now to the accompanying drawings, Fig. l is a view inperspective of the improved machine, omitting the base of the supportingframe thereof;

Fig. 2 is a view in end elevation of the machine shown in Fig. 1;

:Fig. 3 is a View in front elevation of the machine; 4 is a perspectiveView of the several parts which make up the improved roughing tool;

Fig. 5 isa perspective view illustrating the operation' of the machine;1

Fig. 6 is a detail View in end elevation of a modified stitch-rubbingmechanism; Fig. 7 is a detail view in front elevation of thestitch-rubbing mechanism shown inFig. 6; and

Fig. 8 is an incompletesectional view illustrat-' ing a detail of themachine and taken on line VIIlIV'III of Fig. 3.

The operating instrumentalities of the machine.

are carried by a head iii which is mounted upon a suitable standard.Formed in the head II) are a pair of bearings l2 andM, respectively,(Fig. 3), in which is mounted a shaft l6 having an externally taperedend portion 32. Mounted upon the shaft I5 are a pair ofloose pulleys l8and 20, and between these pulleys is mounted a pulley 22 which is fixedto the shaft It. A cover plate 23 for-the above-mentioned pulleys issecured to the'head ID. A pair of oppositely running belts 24 and 25which maybe driven from any suitable source of power normally engage theloose pulleys I8 and 29, respectively. When it is desired to drive theshaft l6, one or the other of the belts 24 and 26 may be shifted'fromits loose pulley to the fixed pulley 22 by one of a pair of beltshifters 28 and 30. a

The roughing tool is mounted upon the free end of the shaft l6 andcomprises a hub 34 (Fig.

' of the above-mentioned spindle extends through the shaft Hi from "thefar end thereof,-having a *handwheel 35 which enables the operatorreadily to secure the roughing toolas a unit to the shaft I6, or torelease the roughing tool for removal with a radial slot 44 extendingthrough the diskv at the base of each of these guideways. Extending fromeach of the blocks 42 through each of the guideways 44 is a pin 45.Integral with the hub 34 is a circular plate or disk 48 in which areformed four spiral slots 58. Eachoi the pins 46 extends into one of theslots 50, the slots being.

so designed as to cause the blocks 42 to be ad'- justed radially uponrelative rotary movement between the disks 38 and 48.

Mounted upon each of the blocks 40 are a pair of arcuate members 52spaced axially from each other to accommodate stitch-rubbing mechanismlater to be described. Each of the arcuate members 52 carries radiallyextending tufts of wire bristles which constitute the abrasive peripheryof the tool. The arcuate members 52 are channel shaped, with the tuftsof bristles set in the base of the channel and the walls serving toconfine the bristles axially and presenting smooth outer surfaces. Eacharcuate member is secured by screws extending through the base of itschannel and threaded into the periphery of its respective block. Tworows of tufts are provided in each arcuate member, the rows extendingcircumferentially parallel to each other with the individual tuftsstaggered. Each arcuate member is staggered circumferentially withrespect to its neighbor on the same block to enable the four arcuatemembers of each ring to break joint with those of the other ring. Whileexpansion of the brush by radial adjustment of the blocks 42 may tend toopen up spaces in each ring of bristles, the other ring will becontinuous in the neighborhood of such spaces and as a result there willalways be some bristles in engagement with the work to assure a steadyeven action upon the work and to avoid the bumping which might occur ifthe spaces did not break joint.

The bristles on the arcuate members 52 adjacent to the disk 38 arerelatively coarse in texture, being in the neighborhood of 0.006 of aninch thick while the bristles on the arcuate members further removedfrom the disk 38 are relatively fine, for example about 0.0045 of aninch. The brush comprising the coarser bristles is identified by thereference character 54 and the brush comprising the finer bristles bythe reference character 56. Loosely mounted upon the spindle 36 beyondthe blocks 40 is a clamping disk 58.

The outer end of the spindle 36 is threaded to accommodate a clampingnut 60. It is evident that when the nut 60 is tightened all of the brushelements will be tightly clamped against the disk 48 in whateverposition of radial adjustment the blocks 40 may occupy. Threaded uponthe hub 34 is a sleeve 62 from which extends a frusto-conical shield 64,the rim of which may engage the bristles of the brush 54. The sleeve 62is held in any desired position of adjustment by a locknut 66. Byadjusting the sleeve 62 the bristles of the brush 54 may be preventedfrom flaring toward the right, or they may even be bent toward the left.The right-hand edge of the periphery of {the brush 54 is thussharplydefined, enabling the operator to confine the roughing action to thechannel base without damaging the upper of the shoe and avoiding thepossibility of stray bristles which might scratch the upper. Theperiphery of the brush 54 is frusto-conical with the large end adjacentto the brush 56. The periphery of the brush 56 is likewisefrusto-conical with the large end adjacent to the brush 54. Referring toFigs. 3 and'5, however, it will be observed that the diameter of thelarge end of the periphery of the brush 54 is somewhat greater than thediameter of the adjacent large end of the periphery of the brush 56 fora reason which will later be explained.

The means for holding the channel lip against the brush 56 are in somerespects similar to those disclosed in the above-mentioned Patent No.

' 2,004,109 and comprise a wedge-shaped finger 68 adjustably secured toa sleeve 10 carried upon the lower end of a lever 12. The finger 68 issimilar to the member 82 of the machine disclosed in the above-mentionedapplication of Johnson, having an under surface adapted toengage thesole of a shoe and an upper surface adapted to support the channel lipagainst the roughing tool. As best shown in Figs. 1 and 2, the lever 12is made up of four segments secured together by. adjustable rigidconnections 13 and I5 and also by a hinge TI. The connections 13 and I5"are of the tongue-and-groove type, the former being arranged forforward and backward adjustment (right and left as seen in Fig. 2) andthe latter for heightwise adjustment of the finger 68; The hinge 11connects the lowest segment, which carries the fingers 68, to the rigidassembly comprising the other three segments, and is arranged forswinging movement of the finger 68 toward and from the roughing tool. Arelatively weak compressionspring 19 surrounding a screw 8| tends tohold the finger 68 away from the roughing tool. The screw 8| extendsthrough one of the segments and is threaded into the other to provide anadjustable stop for the extent of separation of the segments under theinfluence of the spring 19. The spring 19 yields under pressure as theshoe is held against the roughing tool during the operation, the upwardswinging movement of the finger being limited by the engagement ofadjacent surfaces on the two segments of lever which areconnected by thehinge 11. The uppermost segment of the lever 12 is fulcrumed upon a pin14 carried by a block 16 which in turn is mounted upon the end of a rod'18 secured in lugs extending from the head Ill. The upper arm of thelever 12 is connected to one end of an operating rod 80, the oppositeend of the rod 80 being pivotally connected to an arm 82 which ismounted for free swinging movement .upon a bracket 84 carried by the rod18. A rod 86 extends upwardly from a treadle (not shown) and ispivotally connected to the arm 82. Depression of the treadle will drawthe arm 82 downwardly, causing the rod 80 to be pulled towardthe right,as seen in Fig. 3,'to rotate the lever 12 in a clockwise direction. Thetreadle is .normally held up by a spring (not shown) to a stop positiondetermined by a collar 81 adjustably secured upon the rod 86 andengageable with a lug 89 extending from the head I. The connectionbetween the lever 12 and the rod 80 provides for fine adjustment of thenormal or operating position of the lever 12 about its fulcrum i4 andcomprises a pin'having a knurled head 9|. The end portion of the shankof this pin is threaded through an eye in the rod 80 and is secured by alocknut 95. An eccentric 93 (Fig.

2) formed on the shank engages an eye formed in the lever 12. Adjustmentis effected by turning the head 91 while the locknut is loosened.

A gage 88 is provided for assisting the operator in positioning the workpiece. Thisgage' extends over the channel lip-and terminates in adownwardly extending convex edge 90 which is positioned in the generalplane of the clearance space provided by the axial spacing of the twosets of arcuate members 52 as already described. The shank of the gage88 is adjustably clamped by a screw 92 in the lower end of a bar 04, theupper end of which is. clamped upon the pin 14.

In addition to the roughing brushes which act upon the channel base andthe channel lip, the machine is provided with means for rubbing down thestitches which extend over the surface of the channel base closelyadjacent to the shoulder of the channel. The machine shown in Figs. 1,2, 3 and 5 is provided with a single stitch rubbin tool. A modificationcomprising a pair of stitchrubbing tools is illustrated in Figs. 6 and'1. Each member of the pair shown in Figs. 6 and '1 is similar, exceptfor minor differences which will later be pointed out, to the singletool disclosed in the other figures, and the same reference charactersemployed to identify various portions of the single tool (together withits operating mechanism) havebeen applied to corresponding portions ofone member of the pair. Such numbering will be convenient for the reasonthat certain details of the stitch-rubbing mechanism common to both thesingle and the double tool arrangements are best shown in Figs. 5 and6-.

The single stitch-rubbing mechanism will first be described. Thismechanism comprises an arcuate plate 96 which extends rearwardly aroundthe blocks 40 and through the clearance space between the two sets ofbristles and which has formed in its lower extremity a plurality ofblunt teeth I00 which engage the stitching. The plate 96 (see Figs. 5and '7) is secured upon an arm I02, the upper end portion of whichcarries a block I04 having a longitudinal slot which is engaged by aslide I05 in which is journaled an eccentric I06 secured on a'shaft I08.A compression spring H0 is interposed between the lower end of the slotand the slide I05. A screw I I2 threaded through the upper end of theblock :04 extends downwardly to engage the slide I05 as a stop to limitupward movement of the slide. The screw II2 is held in any desiredposition of adjustment by a. locknut H4. The arm I02 at a localitybetween the plate 96 and the block I04 is pivotally connected to a link98 which is pivotally mounted for free swinging movement about the rod18.

The shaftI88 is journaled in bearings I28 and I38 which are both carriedby a bracket I32 (Fig. 3) secured upon the rod 18. Secured upon theshaft I08 is a'pulley I34 (Fig. 2) driven by a belt I36. Rotatablymounted in an arm I38 are a pair of pulleys I40 and I42 which rotate asa unit, being integral in the illustrated machine. The pulley I40 drivesthe belt I36 while the pulley I42 is, in turn, driven through a. crossedbelt I44 from a pulley I46 which, in turn, is driven, when the shaft I8is turning in the direction indicated by the arrow in Fig. 3, through aHorton one-way clutch I48 on the shaft I6. The arm I38 is pivotallymounted for adjustment about a pin I50 (Fig. 2) secured in a bracket I5Iand has an arcuate slot I52 (Fig. l) concentric with the pin I50. Thearm I38 may be clamped in any desired position of adjustment against thebracket I5! by a bolt I54 extending through the slot I52. The bracket atits intermediate portion is split for clamping about the bearing I30.The lower end of the bracket I5I is clamped by a. screw I53 to a pin I55secured in the head I0.

Supported by the bracket I32 is a frusto-conical guard I56 extendingbeneath and in front of the rotating shield 64. The guard I56 is similarto that disclosed in the above-mentioned Brostrom Patent No. 2,087,238and is similarly adjustable bothheightwise and axially of the tool bymeans of clamping bolts I60 extending through slots I62 (see Fig. 3).

For sharpening the maintaining the desired contour of their peripherythere is provided a grinding wheel I64 secured upon a'shaft journaled ina bearing I60 carried by an arm I68. The grinding wheel shaft carries apulley I10 which is driven by a belt I12. The arm I68 is secured upon ashaft I13 which is journaled in a bearing I14 carried by the bracketI32. Rotatably mounted upon an eccentric I16 are a pair of-pulleys I18and I80 both integral with a common hub I82 and rotating as a unit. Thebelt I12 runs over the pulley I18 while the pulley I80 is driven by abelt I88 running over a pulley I84 secured upon the shaft I6. The armI68 extends beyond the bearing I66 and its outer end portion constitutesa handle having a knob I86 by which the arm I68 may be swung about theaxis of the shaft I13. It will be observed that the grinding wheel I64may be brought down from its inoperative position, as shown in Figs. 1,2 and 3, into engagement with the brushes 54 and 56. The operatingposition of the grinding wheel is determined by a stop screw 188engageable with an abutment surface I90 formed on the bracket I32 andsecured in adjusted position by a lock-nut I92. When in its upper orinoperative position the arm I68 is supported by a knurled head I94oithe screw in contact with an upper portion of the abutment I90.

brushes 54 and 56 and for f The arrangement of the eccentric I16 uponthe shaft I13 is such as to loosen the belt I83 when the grinding wheelis moved into inoperative position, thereby stopping the drive of thegrinding wheel, and to tighten the belt I83 and thereby cause thegrinding wheel to be driven when the grinding wheel is brought intooperative position. In order further to insure that the driving wheelwill not needlessly be driven when in inoperative position a plunger I96(see Fig. 3) mounted in the bearing I14 is urged by a spring I91 intoengagement with an annular raised surface I98 on the pulley I18.Movement of the grinding wheel into operative position will withdraw thesurface I98 from engagement with the spring plunger. In order stillfurther to insure against the grinding wheel being needlessly drivenwhen in its inoperative position there is provided a brake in the formof a finger 200 (Fig. 8) engageable with the belt I83 where the latterruns over the pulley I80. The finger 200 extends from a hub 202rotatably mounted on the rod 18 and having a second finger 204 which, inturn, is engageable by an arm 206 extending from a hub secured upon theend of the eccentric'I16. A torsion spring 208 coiled about the rod 18tends to hold the above-mentioned brake in inoperative position.

Swinging of the grinding wheel I64 up into inoperative position willcause the arm 206 to engage the finger 204 and thereby force the finger200 against the beltI83.

'As previously mentioned, the peripheries of the 15 brushes 54 and 56are frusto-conical with their larger diameters adjacent to each otherand with the larger diameter of the brush 54 somewhat greater than thatof the brush 56. In order to maintain this desired contour of theroughing tool the grinding wheel is provided with two frusto-conicalsurfaces 2Illand 2I2 which are complemental, respectively, to thedesired contours of the brushes 54 and 56. The smaller ends of thefrusta 2H] and 2I2 are accordingly adjacent to each other, the diameterof the smaller end of the frustum 2H) being somewhat less than thediameter of the smaller end of the frustum 2I2. The frusta 250 and 2I2may conveniently be composed of separate disks of suitable grindingmaterial secured together as a unit upon the shaft I66.

In order to keep the surface of the work piece free of leather dustduring operation there is provided a blast nozzle 2I4 which is suppliedwith air under pressure through a conduit 2I6 supported by a clamp 2i 8on the bracket '56. A suction dust hood 220 (Fig. 1) is provided fordisposing of the dust.

The operation of the machine upon a shoe S having a channel lip L isillustrated in Fig. 5. The operator first depresses the treadle toretract the finger 68 from the brush 56. He then inserts an end portionof the lip L between the finger 68 and the brush 56, pressing upwardlyto compress the spring I9 until the finger 68 swings upwardly as far aspermitted by the above-described engaging faces on the segments of thelever 72 connected by the hinge Ti. He then releases the treadle,enabling the treadle spring to swing the lever I2 counter-clockwise, asviewed in Fig. 3, into the operating position determined by theadjustment of the eccentric 93. The finger 68, in accordance with suchadjustment, will control the pressure of the lip L against the brush 56.In presenting the shoe to the machine the operator holds the shoe withthe toe end pointing toward him, and he feeds the shoe away fromhimself. He is careful at all times to hold the shoe with the edge 90 ofthe gage 68 against the shoulder of the channel, thus maintaining theshoe in proper relation to the roughing and stitch-rubbing tools. Theedge 96 prevents the operator from inadvertently moving the shoe too farto the left, which might cause the finger 68 to turn down the lip L andthus to expose the wrong side of the lip to the brush 56. The directionof rotation of the shaft I6 as indicated by the arrow in Fig. 3 is suchas to assist in the feeding of the shoe. The operator in feeding theshoe turns it in accordance with the curvature of the outline of thesole, continuing the operation until the opposite end of the channel isreached. When he finishes the operation the toe end of the shoe will bepointed away from him.

It will be observed that the stitch-rubbing tool 96 is oscillated in anorbital path which is elongated in the direction of feed of the shoeandthat this tool in its lower position, at which it engages the shoe, willtravel in the direction of feed. The movement of the tool isconsiderably faster than the feed of the shoe to enable the tool to rubagainst the stitching. The spring I I yields and thereby enables theshoe to flatten out the lower portion of the path of travel of thestitch-rubbing 'tool 96 which otherwise might tend to push the shoe awayfrom the brushes 54 and 56. The teeth I60 engage a length of stitchinggreater than the extent of their oscillation. The successive contacts ofthe teeth will thus overlap, and the entire length of stitching will beengaged. The effect of the teeth I06 is not only to rub down and flattenout the stitches, but also slightly to mutilate the top of the thread toenable the cement better to penetrate and better to adhere when the lipis laid. The teeth I60 are not sharp enough to weaken the threadappreciably. The stitch-rubbing tool, also operating in the direction offeed, contributes to the elfect of the roughing brushes in helping theoperator feed the shoe. The width of the teeth I00, that is, thethickness of the plate 96, is more than sufficient to cover thestitching, being enough greater to avoid likelihood of missing thestitching as the operatonaided by the gage 90, feeds the shoe. When itis desired to sharpen the brushes the rotation of the shaft I6 isreversed by moving firstthe belt shifter 28 to the left and then thebelt shifter 30 to the left, as viewed in Fig. 3. Such reversal of drivewhile the brushes are beingsharpened increases their effectiveness whendriven in their normal direction for roughing. It will be observed thatthe Horton clutch I48 will not operate to transmit such reverse drive ofthe shaft I6 to the shaft I68, and will thus prevent the stitch-rubbinginstrumentalities from being needlessly driven during the grinding ofthe brushes. The arm I86 is then swung down into operative position. Ashas already been explained, such movement will cause the grinding wheelto be driven and the adjustment of the screw I 88 will determine theexact diametrical dimensions of'the brushes. As the brushes wear downthey may be expanded by loosening the nut 66 and rotating the brushestogether with their disk 38 relatively to the disk 48. The brushassembly may then be clamped in adjusted position by tightening the nut60. The contour of the periphery of the brushes as above described isimportant, inasmuch as it has been found that unless the diameter of thelarger end of the brush 56 is less than the diameter of the larger endof the brush 54, the brush 56 may sometimes tend to scour through therelatively thin lip of the channel. The fact that the brush 56 iscomposed of finer and more flexible bristles than the brush 54 helpslikewise to avoid damage to the channel lip. The modified stitch-rubbingmechanism shown in Figs. 6 and 7 comprises a pair of stitch-rubbingtools oscillated alternately with one or the other always in engagementwith the work. Except for such differences as will presently be pointedout, the various members of one set which make up this double mechanismare similar to corresponding members of the other set, and also tocorresponding members of the simpler mechanism already described. Forconvenience, one set of members of the double mechanism have been giventhe same reference characters as the corresponding members of the singlemechanism. The second set of members shown in Figs. 6 and 7 comprise aplate 596 similar to the plate 96 but extending forwardly around theblocks 40, and having formed in its lower extremity a plurality of bluntteeth 666. Each of the plates 96 and 596 in the locality of the teeth isreduced to half the thickness of the remaining portion of the plate. Thereduced portions of the plates are in sliding engagement with eachother, and are of sufilcient extent to provide clearance for theunreduced portions as, the plates oscillate. The unreduced portions ofthe plates, as seen in Fig. 7, are in alinement with each other andoccupy the clearance space between the brushes 54 and 56. The plate 96of the'single stitch-rubbing mechanism -.is not reduced in thicknessat'the locality of theteeth and in that respect differs from the plate96 of the double mechanism. The plate 596 is secured upon an arm 602similar to the arm I62 except for the fact that the. arm I 62 is ofisetto bring the plate 96 into alinement with the plate 596. The upper endportion of the arm 662, carries a block 664 similar to the block I04 andhaving a longitudinal slot which is engaged by a slide 665 similar tothe slide I95. An eccentric 666 similar to but displaced 180 from theeccentric I06 is secured on the shaft I96 and is journaled in the slide605. In the double construction illustrated in Figs. 6 and 7 the eccen--trics I06 and 606 are integral, being formed on a sleeve which issecured upon the shaft I68. A compression spring 6") similar to thespring H6 is interposed between the slide 665 andthe lower end of the.slot in the block 664. A screw 6I2 threaded through the upper end of theblock 664 extends downwardly to engage the slide 695 as a stop to limitthe upward movement of the slide. The screw (H2 is held in any desiredposition of adjustment by a locknut 6M. The arm 662 at a localitybetween the plate 596 and the block 694 is pivotally connected to a link598 which is pivotally mounted for free swinging movement about the rod18. The members 6I2, 6M and 598 are similar in construction and purposeto the previously described members H2, H4 and 98, respectively.

The movement of the stitch-rubbing tool 596 like that of the tool 96previously described will be oscillation in an orbital path elongated inthe direction of feed of the shoe. By reason of their respectiveeccentrics being displaced from each other by 180 the stitch-rubbingtools 96 and 596 will operate alternately. The springs III! and BIG willyield and thereby enable the shoe to flatten out the paths of travel ofthe tools with the result that one tool will engage the work before theother has left it.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. A machine for operating on channeled soles comprising a pair ofroughing tools constructed and arranged to operate respectively upon achannel base and a channel lip, a movable stitchrubbing tool positionedbetween said roughing tools, and means for imparting stitch-rubbingmovement to said stitch-rubbing tool.

2. A machine for operating on channeled soles comprising a pair ofadjacent roughing brushes for operating respectively upon a channel baseand a channel lip, a driven shaft on which said roughing brushes aremounted, a stitch-rubbing tool positioned between said roughing brushes,and means for oscillating said stitch-rubbing tool.

3.In a machine for operating on channeled soles, a rotaryroughing brushadapted to operate upon a channel surface, driving means for said brush,a stitch-rubbing tool adjacent to said brush, and means for oscillatingsaid stitch-rubbing tool.

4. A machine for operating on channeled soles comprising a pair ofdriven adjacent co-axial roughing brushes for operating respectivelyupon a channel base and a channel lip, a stitch-rubbing tool in the formof a thin blade-like member extending between said brushes and havingblunt stitch-engaging teeth extending from its outer.

edge, and means for oscillating said stitch-rubbing tool.

5. In a machine for operating on shoes, a

stitch-rubbing tool, mechanism for oscillating said too-l in an orbitalpath, and a spring in said mechanism yieldable under pressure of thesole against the tool to flatten out said orbital path 5 way, and afreely swinging link upon which the intermediate portion of said leveris fulcrumed.

7. In a machine for operating on shoes, a stitch-rubbing tool, a levercarrying at one of its ends said stitch-rubbing tool and having aslotted guideway formed in its other-end, a driven eccentricin drivingengagement with said guideway, a freely swinging link upon which theintermediate portion of said lever is fulcrumed, and a compressionspring interposed between said eccentric and the base of said slot toenables-aid stitch-rubbing tool to yield under pressure of the work. I8. In a machine for operating on shoes, a pair of stitch-rubbing toolsin sliding contact with each other, and means for oscillating said toolsalternately in orbital paths.

9. A machine for operating on channeled soles comprising a pair ofroughing tools constructed and arranged to operate respectively upon achannel base and a channel lip, a stitch-rubbing tool positioned betweensaid roughing tools, and a gage engageable with the shoulder of thechannel to position the shoe in operating relation to said tools.

10. A machine for operating on channeled soles comprising astitch-rubbing member, means for oscillating said stitch-rubbing memberto cause it to rub down stitching on a channeled sole, and a gageengageable with the shoulder of the channel to position the shoe inoperating relation to said stitch-rubbing member.

11. A machine for operating on channeled soles comprising a roughingtool, a member adapted to hold a turned-up channel lip against saidroughing tool, said lip-holding member being constructed and arranged tooccupy the space between the turned-up lip and the outer surface of thesole on which the lip is formed, a lever carrying said lip-holdingmember, said lever being fulcrumed for swinging movement of saidlip-holding member toward and from said roughing tool, a yieldable,element in said lever, and resilient 'means urging said yieldableelement in a direction to maintain said lip-holding member away from theroughing tool, said resilient means being yieldable under pressure ofthe outer surface of the sole to enable the operator to exert pressurethrough the shoe to cause the liphold-. ing member to press the lipagainst the roughing tool.

12. A rotary abrading tool comprising a plurality of sectors, a supportconstructed and arranged for radial movement of said sectors, and

abrasive material constituting the periphery of the tool and carried bythe sectors, the abrasive material on each adjacent pair of sectorsoverlapping to insure circumferential continuity when the sectors areexpanded as a group.

13. A rotary abrading tool comprising a plurality of sectors each havingabrading bristles extending outwardly from its periphery, a disk havinga plurality of radial guideways in which said sectors respectively aremounted, a cam having a plurality of slots, means carried by saidsectors and engageable with said cam slots for adjusting the radialpositions of said sectors, said cam slots being arranged to cause radialmovement of said sectors upon relative rotation of said disk, and meansfor securing said disk against rotation to hold said sectors in theiradjusted positions.

14. A rotary roughing brush comprising a plurality of sectors eachhaving abrading bristles extending outwardly from its periphery, a diskhaving a plurality of guideways in which said sectors are respectivelymounted, a circular plate having a plurality of spiral'cam slots andhaving a hub on which said disk is rotatably mounted, cam elements onsaid sectors respectively cooperating with said spiral slots to movesaid sectors radially to expand and contract the brush upon rotation ofsaid disk relatively to said cam plate, and means for clamping saidsectors against said cam plate to maintain the sectors in adjustedposition.

15. A rotary'abrading tool comprising a plurality of sectors, a supportconstructed and arranged for radial movement of said sectors whereby thesectors may be expanded as a group to increase the diameter of the tool,and a pair of arcuate abrading elements on each of said sectors, themembers of each pair being axially separated from each other to providea clearance space extending around the periphery of the tool.

16. A rotary roughing brush comprising a plurality of sectors, a supportconstructed and arranged for radial movement of said sectors whereby thesectors may be expanded as a group to increase the diameter of thebrush, a pair of arcuate channel-shaped bristle holders on each of saidsectors, the members of each pair being axially separated from eachother to provide a clearance space extending around the periphery of thebrush, and wire bristles set in the bases of said channel-shaped holdersand extending beyond the Walls of said holders.

JOHN B. HADAWAY.

